Practical draughtsmen's work, with numerous engravings and diagrams (1903)
Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 38
Fig. 48.—Eailway Curve. wood, or ebonite, with radii varying from 1^ in. to 240 in., eachcurve being numbered according to its radius in inches. Theseare also useful for setting out flat curves, such as those of camber … Fig. 49.—French Curve, arches and the lines of railway sidings. When curves of ever-varying radius are to be inked in, theFrench curve, shown in Figs. 49 to 51, is used, This consists
Mechanical drawing
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